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<h2><a href="local_closure_goog_ui_tree_treenode.js.html">treenode.js</a></h2>

<pre class="prettyprint lang-js">
<a name="line1"></a>// Copyright 2007 The Closure Library Authors. All Rights Reserved.
<a name="line2"></a>//
<a name="line3"></a>// Licensed under the Apache License, Version 2.0 (the &quot;License&quot;);
<a name="line4"></a>// you may not use this file except in compliance with the License.
<a name="line5"></a>// You may obtain a copy of the License at
<a name="line6"></a>//
<a name="line7"></a>//      http://www.apache.org/licenses/LICENSE-2.0
<a name="line8"></a>//
<a name="line9"></a>// Unless required by applicable law or agreed to in writing, software
<a name="line10"></a>// distributed under the License is distributed on an &quot;AS-IS&quot; BASIS,
<a name="line11"></a>// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<a name="line12"></a>// See the License for the specific language governing permissions and
<a name="line13"></a>// limitations under the License.
<a name="line14"></a>
<a name="line15"></a>/**
<a name="line16"></a> * @fileoverview Definition of the goog.ui.tree.TreeNode class.
<a name="line17"></a> *
<a name="line18"></a> * @author arv@google.com (Erik Arvidsson)
<a name="line19"></a> * @author eae@google.com (Emil A Eklund)
<a name="line20"></a> *
<a name="line21"></a> * This is a based on the webfx tree control. See file comment in
<a name="line22"></a> * treecontrol.js.
<a name="line23"></a> */
<a name="line24"></a>
<a name="line25"></a>goog.provide(&#39;goog.ui.tree.TreeNode&#39;);
<a name="line26"></a>
<a name="line27"></a>goog.require(&#39;goog.ui.tree.BaseNode&#39;);
<a name="line28"></a>
<a name="line29"></a>
<a name="line30"></a>
<a name="line31"></a>/**
<a name="line32"></a> * A single node in the tree.
<a name="line33"></a> * @param {string|!goog.html.SafeHtml} html The html content of the node label.
<a name="line34"></a> * @param {Object=} opt_config The configuration for the tree. See
<a name="line35"></a> *    goog.ui.tree.TreeControl.defaultConfig. If not specified, a default config
<a name="line36"></a> *    will be used.
<a name="line37"></a> * @param {goog.dom.DomHelper=} opt_domHelper Optional DOM helper.
<a name="line38"></a> * @constructor
<a name="line39"></a> * @extends {goog.ui.tree.BaseNode}
<a name="line40"></a> */
<a name="line41"></a>goog.ui.tree.TreeNode = function(html, opt_config, opt_domHelper) {
<a name="line42"></a>  goog.ui.tree.BaseNode.call(this, html, opt_config, opt_domHelper);
<a name="line43"></a>};
<a name="line44"></a>goog.inherits(goog.ui.tree.TreeNode, goog.ui.tree.BaseNode);
<a name="line45"></a>
<a name="line46"></a>
<a name="line47"></a>/**
<a name="line48"></a> * Returns the tree.
<a name="line49"></a> * @return {?goog.ui.tree.TreeControl} The tree.
<a name="line50"></a> * @override
<a name="line51"></a> */
<a name="line52"></a>goog.ui.tree.TreeNode.prototype.getTree = function() {
<a name="line53"></a>  if (this.tree) {
<a name="line54"></a>    return this.tree;
<a name="line55"></a>  }
<a name="line56"></a>  var parent = this.getParent();
<a name="line57"></a>  if (parent) {
<a name="line58"></a>    var tree = parent.getTree();
<a name="line59"></a>    if (tree) {
<a name="line60"></a>      this.setTreeInternal(tree);
<a name="line61"></a>      return tree;
<a name="line62"></a>    }
<a name="line63"></a>  }
<a name="line64"></a>  return null;
<a name="line65"></a>};
<a name="line66"></a>
<a name="line67"></a>
<a name="line68"></a>/**
<a name="line69"></a> * Returns the source for the icon.
<a name="line70"></a> * @return {string} Src for the icon.
<a name="line71"></a> * @override
<a name="line72"></a> */
<a name="line73"></a>goog.ui.tree.TreeNode.prototype.getCalculatedIconClass = function() {
<a name="line74"></a>  var expanded = this.getExpanded();
<a name="line75"></a>  var expandedIconClass = this.getExpandedIconClass();
<a name="line76"></a>  if (expanded &amp;&amp; expandedIconClass) {
<a name="line77"></a>    return expandedIconClass;
<a name="line78"></a>  }
<a name="line79"></a>  var iconClass = this.getIconClass();
<a name="line80"></a>  if (!expanded &amp;&amp; iconClass) {
<a name="line81"></a>    return iconClass;
<a name="line82"></a>  }
<a name="line83"></a>
<a name="line84"></a>  // fall back on default icons
<a name="line85"></a>  var config = this.getConfig();
<a name="line86"></a>  if (this.hasChildren()) {
<a name="line87"></a>    if (expanded &amp;&amp; config.cssExpandedFolderIcon) {
<a name="line88"></a>      return config.cssTreeIcon + &#39; &#39; +
<a name="line89"></a>             config.cssExpandedFolderIcon;
<a name="line90"></a>    } else if (!expanded &amp;&amp; config.cssCollapsedFolderIcon) {
<a name="line91"></a>      return config.cssTreeIcon + &#39; &#39; +
<a name="line92"></a>             config.cssCollapsedFolderIcon;
<a name="line93"></a>    }
<a name="line94"></a>  } else {
<a name="line95"></a>    if (config.cssFileIcon) {
<a name="line96"></a>      return config.cssTreeIcon + &#39; &#39; + config.cssFileIcon;
<a name="line97"></a>    }
<a name="line98"></a>  }
<a name="line99"></a>  return &#39;&#39;;
<a name="line100"></a>};
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